What's not clear to me from your text: what kind of role are you looking for? I.e. what are you missing from the "senior developer" roles?
That's a very good question, and not necessarily something I find easy to explain concisely. Let me try anyway :). Note, some of the bad impressions may come from the usual clued up recruiters who are trolling LinkedIn for keywords and then crank up the spam. So what I expect from a role that's commensurate with my experience (trying to avoid "senior" as that's usually a pigeonhole): - You tell me what you need to ha…
I've been where you are. One tip I have is to spend a little bit of time (an hour or two) and work out exactly how to explain it concisely. What's your elevator pitch? If you ran into the CTO of your dream tech company at a friend's party, and they asked what kind of work you would like to do, what would you explain in 60 seconds?
For what it's worth, I think what you have above is pretty close. If you can tweak it slightly, you can likely get to a "Here's what I want to be doing and this is why you should hire me" in the same sort of pitch.
I know it's difficult to explain sometimes, but it's worth your time to figure out how to frame it concisely. Good luck!